Internet of Things (IoT) systems are of paramount importance to provide ubiquitous wireless
connectivity for smart cities. However, such systems are facing security challenges due to …

Covert communication hides the transmission of a message from a watchful adversary, while
ensuring reliable information decoding at the receiver, providing enhanced security in …

In this work, we adopt channel inversion power control (CIPC) to achieve covert
communications aided by a full-duplex receiver. Specifically, the transmitter varies the power …

This paper examines the possibility, performance limits, and associated costs for a self-
sustained relay to transmit its own covert information to a destination on top of forwarding the …

This article investigates the covertness and secrecy of wireless communications in an
untrusted relay-assisted device-to-device (D2D) network consisting of a full-duplex base …

This work considers unmanned aerial vehicle (UAV) networks for collecting data covertly
from ground users. The full-duplex (FD) UAV intends to gather critical information from a …

This work considers covert communications with the aid of an intelligent reflecting surface
(IRS). We jointly design the transmit power and IRS's reflection phase shifts and amplitudes …

The Terahertz (THz) band is envisioned as a promising technique to support bandwidth-
hungry and secure applications. Although the significant path loss and strong directivity …

In covert communication, Alice tries to communicate with Bob without being detected by a
warden Willie. When the distance between Alice and Bob becomes large compared with the …

In this paper, we investigate the feasibility and performance of the covert communication
with a spectrum sharing relay in the finite blocklength regime. Specifically, the relay …